A square cell pressurization restraint tray

Abstract

The application provides a square battery cell pressurizing and restraining tray in the technical field of battery cell pressurizing devices, which comprises a fixing frame, an adjusting module arranged on one side of the inside of the fixing frame and in sliding connection with the fixing frame, and a pressurizing module arranged on the other side of the inside of the fixing frame and in sliding connection with the fixing frame. The fixing frame comprises a bottom plate, two vertical plates symmetrically arranged on the two sides of the top end of the bottom plate and provided with a plurality of waist-shaped mounting holes, at least one pad plate placed on the top end of the bottom plate and located between the two vertical plates, four guide rods with two ends connected with a vertical plate respectively, and eight linear bearings arranged on the guide rods respectively. The adjusting module and the pressurizing module are mounted on the fixing frame through the waist-shaped mounting holes and the linear bearings. Two vertical scales are arranged on the outer sides of a vertical plate respectively. A scale rod is connected with the side edges of a vertical plate at two ends respectively. A horizontal scale is arranged on the scale rod. The application has the advantage that the compatibility of battery cell pressurizing and restraining is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of battery cell pressurization devices, and in particular to a square battery cell pressurization restraint tray. Background Technology

[0002] The power battery uses a square aluminum casing. During automated production, the battery cells (square cells) need to undergo a formation process to activate them. During formation, due to poor raw materials, substandard electrolytes, or other factors, the cells may expand or develop localized bulges. To ensure consistent cell dimensions and prevent issues with subsequent assembly processes or scrapping due to expansion and deformation, external pressure is applied to the cells during formation to suppress deformation.

[0003] For the pressure restraint of battery cells, traditionally, high-temperature resistant epoxy boards are used to separate the cells, and then a cylinder or motor is used to pressurize them to the appropriate position for locking. However, the traditional method has the following drawbacks:

[0004] 1. Adjusting the thickness of battery cells of different sizes requires adjusting the number of thickness pads to adjust the spacing between the cells. However, the thickness and number of thickness pads may not be perfectly matched to the cells. 2. Adjusting the length of square battery cells of different sizes requires replacing spacers of different sizes to adjust the cell's position along its length. The size of the spacers needs to be matched to each cell of different lengths, resulting in poor compatibility. 3. The asymmetrical structure with one fixed end and the other movable and pressurized necessitates that related testing equipment also adopt an asymmetrical design, leading to poor compatibility and increased equipment costs. 4. When the height of the battery cell changes, the applied pressure cannot be fully applied to the geometric center of the cell's end face, potentially causing inconsistent local pressure on the upper and lower parts of the cell.

[0005] Therefore, how to provide a square cell pressure restraint tray to improve the compatibility of cell pressure restraint has become a technical problem that urgently needs to be solved. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a square cell pressure restraint tray to improve the compatibility of cell pressure restraint.

[0007] This invention is implemented as follows: a square battery cell pressure restraint tray, comprising:

[0008] A fixed frame;

[0009] An adjustment module is located on one side inside the fixed frame and is slidably connected to the fixed frame;

[0010] A pressurization module is located on the other side inside the fixed frame and is slidably connected to the fixed frame;

[0011] The fixing frame includes:

[0012] A base plate with four fixing holes and two positioning holes symmetrically arranged, and a notch on the side;

[0013] Two upright plates are symmetrically arranged on both sides of the top of the base plate, and are provided with several waist-shaped mounting holes;

[0014] At least one pad is placed on top of the base plate, located between the two upright plates;

[0015] Four guide rods, each end of which is connected to one of the aforementioned vertical plates;

[0016] Eight linear bearings are respectively mounted on each of the guide rods; the adjustment module and the pressurization module are mounted on the fixed frame through the waist-shaped mounting holes and the linear bearings.

[0017] Two vertical rulers are respectively set on the outside of one of the vertical plates;

[0018] A ruler rod, with its two ends connected to the side of one of the aforementioned upright plates;

[0019] A horizontal ruler is set on the ruler rod.

[0020] Furthermore, the adjustment module includes:

[0021] An adjusting end pressure plate is fitted onto the four linear bearings;

[0022] A first fixing plate is disposed on the outside of the upright plate;

[0023] A first lead screw nut;

[0024] An adjusting screw passes through the first fixing plate and is connected to the first screw nut;

[0025] A pressure sensor is mounted on the first fixed plate, with its detection end located on the first lead screw nut;

[0026] A first pointer is provided on the first fixed plate;

[0027] Two first limiting blocks are symmetrically arranged in the middle of the adjusting end pressure plate;

[0028] A first bearing slider is located between two first limiting blocks and slides vertically through the first limiting blocks;

[0029] A first crossed roller bearing is embedded in the middle of the first bearing slider and connected to the first lead screw nut.

[0030] Furthermore, the pressurization module includes:

[0031] A pressure plate at the force application end is fitted onto the four linear bearings;

[0032] A second fixing plate is disposed on the outside of the upright plate;

[0033] A second lead screw nut;

[0034] A pressure screw passes through the second fixing plate and is connected to the second screw nut;

[0035] A second pointer is located on the second lead screw nut;

[0036] Two second limiting blocks are symmetrically arranged in the middle of the pressure plate at the force application end;

[0037] A second bearing slider is located between two second limiting blocks and slides vertically through the second limiting blocks;

[0038] A second crossed roller bearing is embedded in the middle of the second bearing slider and connected to the second lead screw nut;

[0039] Four limiting rods are symmetrically arranged on the inner edge of the pressure plate at the force application end;

[0040] Two length-sliding blocks are symmetrically arranged at the top of the pressure plate at the force application end;

[0041] Two length adjustment plates are slidably connected to one of the aforementioned length sliding blocks;

[0042] Two length positioning blocks are respectively installed on one of the length adjustment plates;

[0043] Two length scales are respectively set at the top of one of the length groove blocks.

[0044] The advantages of this invention are:

[0045] By setting a pad on the fixed frame to adjust the height of the upper surface of the battery cell, setting a movable adjustment module and a pressure module to match the thickness of the battery cell, and setting a length adjustment plate to slide and connect with a length slide block to match the length of the battery cell, the system is compatible with battery cells of different sizes. Vertical, horizontal and length scales are set to ensure the accuracy of size adjustment. The adjustment module and pressure module can be adjusted in height through the waist-shaped mounting hole to ensure that the pressure applied to the battery cell is consistent with the geometric center of the battery cell. Ultimately, this greatly improves the compatibility, accuracy and stability of battery cell pressure restraint. Attached Figure Description

[0046] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0047] Figure 1This is an exploded view of a square battery cell pressure restraint tray according to the present invention.

[0048] Figure 2 This is a schematic diagram of the structure of the fixing frame of the present invention.

[0049] Figure 3 This is a schematic diagram of the structure of the adjustment module of the present invention.

[0050] Figure 4 This is a schematic diagram of the pressurization module of the present invention.

[0051] Marker explanation:

[0052] 100-A square battery cell pressure restraint tray, 1-Fixing frame, 2-Adjustment module, 3-Pressure module, 4-Battery cell, 11-Base plate, 12-Upright plate, 13-Padded plate, 14-Guide rod, 15-Linear bearing, 16-Vertical scale, 17-Scale rod, 18-Horizontal scale, 111-Fixing hole, 112-Positioning hole, 113-Notch, 121-Oval mounting hole, 21-Adjusting end pressure plate, 22-First fixing plate, 23-First lead screw nut, 24-Adjusting lead screw, 25 - Pressure sensor, 26- First pointer, 27- First limit block, 28- First bearing slider, 29- First crossed roller bearing, 31- Force-applying end pressure plate, 32- Second fixing plate, 33- Second lead screw nut, 34- Pressure lead screw, 35- Second pointer, 36- Second limit block, 37- Second bearing slider, 38- Second crossed roller bearing, 391- Limit rod, 392- Length slide block, 393- Length adjustment plate, 394- Length positioning block, 395- Length scale. Detailed Implementation

[0053] This invention provides a square battery cell pressure restraint tray 100, which solves the technical problem of poor compatibility with battery cells of different sizes caused by using high-temperature resistant epoxy boards to separate battery cells and then using cylinders or motors to pressurize them to the appropriate position and lock them. This invention achieves a significant improvement in the technical effect of improving the compatibility of battery cell pressure restraint.

[0054] The technical solution in this embodiment of the invention is to solve the above problems. The general idea is as follows: a pad 13 is set on the fixing frame 1 to adjust the height of the upper surface of the battery cell 4; a movable adjustment module 2 and a pressure module 3 are set to match the thickness of the battery cell 4; and a length adjustment plate 393 is slidably connected to a length slide block 392 to match the length of the battery cell 4, so as to improve the compatibility of the pressure restraint of the battery cell 4.

[0055] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0056] Please refer to Figures 1 to 4 As shown, a preferred embodiment of the square battery cell pressure restraint tray 100 of the present invention includes:

[0057] A fixed frame 1 is used to support the pressurized restraint tray 100 and place the battery cell 4 to be pressurized;

[0058] An adjustment module 2 is located on one side inside the fixed frame 1 and is slidably connected to the fixed frame 1;

[0059] A pressurization module 3 is located on the other side inside the fixing frame 1 and is slidably connected to the fixing frame 1;

[0060] The fixing frame 1 includes:

[0061] A base plate 11 has four fixing holes 111 and two positioning holes 112 symmetrically arranged, and a notch 113 on the side; the fixing holes 111 are used to fix the pressure restraint tray 100; the positioning holes 112 are used to position the pressure restraint tray 100; the notch 113 is used to prevent the pressure restraint tray 100 from being mistakenly placed.

[0062] Two upright plates 12 are symmetrically arranged on both sides of the top of the base plate 11, and are provided with a number of waist-shaped mounting holes 121 for mounting the adjustment module 2 and the pressurization module 3;

[0063] At least one pad 13 is placed on the top of the base plate 11, between the two upright plates 12, to adjust the height of each battery cell 4 so that the upper surface of each battery cell 4 is at the same height.

[0064] Four guide rods 14, each end of which is connected to a vertical plate 12, are used to enhance the stability of the fixing frame 2 and provide guidance for the adjustment module 2 and the pressurization module 3;

[0065] Eight linear bearings 15 are respectively disposed on each of the guide rods 14 for guiding the adjustment module 2 and the pressurization module 3; the adjustment module 2 and the pressurization module 3 are mounted on the fixing frame 1 through the waist-shaped mounting hole 121 and the linear bearings 15.

[0066] Two vertical scales 16 are respectively set on the outside of one of the upright plates 12 to display the height of the adjustment module 2 and the pressure module 3, so as to ensure that the adjustment module 2 and the pressure module 3 are at the same height and improve the stress on the battery cell 4;

[0067] A ruler rod 17 is connected at both ends to the side of a vertical plate 12;

[0068] A horizontal ruler 18 is set on the ruler rod 17 to display the distance between the adjustment module 2 and the pressure module 3, ensuring that the adjustment module 2 and the pressure module 3 are at the same scale position for battery cells 4 of different thicknesses, so that the center position of battery cells 4 of different thicknesses does not change.

[0069] The adjustment module 2 includes:

[0070] An adjustment end pressure plate 21 is sleeved on the four linear bearings 15 to directly transmit the axial force of the adjustment screw 24 to the battery cell 4 and to disperse the force applied by the adjustment screw 24 to prevent the battery cell 4 from being deformed by local stress.

[0071] A first fixing plate 22 is disposed on the outside of the upright plate 12;

[0072] A first lead screw nut 23 is used to transmit the torque of the adjusting lead screw 24, so as to realize the axial movement and adjustment of the adjusting module 2;

[0073] An adjusting screw 24 passes through the first fixing plate 22 and is connected to the first screw nut 23. It is used to adjust the positioning position of the battery cell 4 of different thicknesses, that is, to flexibly adjust the center position of the battery cell 4.

[0074] A pressure sensor 25 is mounted on the first fixed plate 22, with its detection end located on the first lead screw nut 23. It is used to calibrate and monitor the pressure applied by the pressure restraint tray 100 in real time to ensure that the pressure is not overloaded and to prevent axial rotation and displacement through the first fixed plate 22.

[0075] A first pointer 26 is provided on the first fixed plate 22 to indicate the vertical height of the adjustment module 2, ensuring that the adjustment module 2 and the pressurization module 3 are at the same height;

[0076] Two first limiting blocks 27 are symmetrically arranged in the middle of the adjusting end pressure plate 21, and are used to guide the vertical movement of the first bearing slider 28 and limit its horizontal movement.

[0077] A first bearing slider 28 is located between two first limiting blocks 27. It slides vertically through the first limiting blocks 27 to adjust the vertical center of the first crossed roller bearing 29, so that the vertical direction of the force of the adjusting screw 24 is symmetrical with respect to the height direction of the battery cell 4, and at the same time adapts to the change in the height of the adjusting screw 24.

[0078] A first crossed roller bearing 29 is embedded in the middle of the first bearing slider 28 and connected to the first lead screw nut 23. It is used to absorb the torque of the adjusting lead screw 24 and transmit the displacement of the adjusting lead screw 24 to push the adjusting module 2 to move axially.

[0079] The pressurization module 3 includes:

[0080] A pressure plate 31 is sleeved on the four linear bearings 15 to directly transmit the axial force of the pressure screw 34 to the battery cell 4 and to disperse the force applied by the pressure screw 34 to prevent the battery cell 4 from being deformed by local stress.

[0081] A second fixing plate 32 is disposed on the outside of the upright plate 12;

[0082] A second lead screw nut 33 is used to transmit the torque of the pressure lead screw 34, so as to realize the axial movement and adjustment of the pressure module 3;

[0083] A pressure screw 34 passes through the second fixing plate 32 and is connected to the second screw nut 33;

[0084] A second pointer 35 is provided on the second lead screw nut 33;

[0085] Two second limiting blocks 36 are symmetrically arranged in the middle of the force-applying end pressure plate 31, and are used for guiding the vertical movement of the second bearing slider 37 and limiting its horizontal movement.

[0086] A second bearing slider 37 is located between two second limit blocks 36. It slides vertically through the second limit blocks 36 to adjust the vertical center of the second cross roller bearing 38, so that the vertical direction of the force of the pressure screw 34 is symmetrical with respect to the height direction of the battery cell 4, and at the same time adapts to the change in the height of the pressure screw 34.

[0087] A second crossed roller bearing 38 is embedded in the middle of the second bearing slider 37 and connected to the second lead screw nut 33;

[0088] Four limiting rods 391 are symmetrically arranged on the inner edge of the pressure plate 31 at the force application end, which are used for mechanical limiting of the pressure applied by the pressure module 3 to prevent pressure overload from damaging the battery cell 4.

[0089] Two length sliding blocks 392 are symmetrically arranged at the top of the force-applying pressure plate 31;

[0090] Two length adjustment plates 393 are slidably connected to a length sliding block 392, respectively, for matching battery cells 4 of different lengths;

[0091] Two length positioning blocks 394 are respectively installed on a length adjustment plate 393 for the protection and guidance of the battery cell 4;

[0092] Two length scales 395 are respectively set at the top of the length slide block 392 to ensure that the battery cells 4 of different lengths are at the center of the pressure restraint tray 100.

[0093] Working principle of this invention:

[0094] The pressure restraint tray 100 is fixed through the fixing hole 111. The height of the pad 13 is adjusted according to the height of the battery cell 4 to ensure that the height of the upper surface of the terminal post of each battery cell 4 is consistent. The position of the adjustment module 2 is adjusted to the specified scale of the horizontal scale 18 according to the thickness of the battery cell 4. The position of the length adjustment plates 393 on both sides is adjusted to the specified scale of the length scale 395 according to the length of the battery cell 4. Torque is applied to the pressure screw 34 of the pressure module 3. The pressure sensor 25 monitors the applied pressure until the pressure reaches the set value and then the pressure is stopped.

[0095] In summary, the advantages of this invention are:

[0096] By setting a pad on the fixed frame to adjust the height of the upper surface of the battery cell, setting a movable adjustment module and a pressure module to match the thickness of the battery cell, and setting a length adjustment plate to slide and connect with a length slide block to match the length of the battery cell, the system is compatible with battery cells of different sizes. Vertical, horizontal and length scales are set to ensure the accuracy of size adjustment. The adjustment module and pressure module can be adjusted in height through the waist-shaped mounting hole to ensure that the pressure applied to the battery cell is consistent with the geometric center of the battery cell. Ultimately, this greatly improves the compatibility, accuracy and stability of battery cell pressure restraint.

[0097] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A square cell pressurized restraint tray characterized by: The utility model relates to a kind of adjustable pressure testing device, including: A fixed frame; An adjustment module is arranged in one side inside the fixed frame, and is slidably connected with the fixed frame; A pressurizing module is arranged in the other side inside the fixed frame, and is slidably connected with the fixed frame; The fixed frame includes: A bottom plate, symmetrically provided with four fixing holes and two positioning holes, and a notch is provided on the side edge; Two vertical plates are symmetrically arranged on the top of the bottom plate on both sides, and are provided with a plurality of waist-shaped mounting holes; At least one pad is placed on the top of the bottom plate between the two vertical plates; Four guide rods are respectively connected with one of the vertical plates at both ends; Eight linear bearings are respectively arranged on each guide rod;The adjustment module and the pressurizing module are installed on the fixed frame through the waist-shaped mounting hole and the linear bearing; Two vertical scales are respectively arranged on the outside of one of the vertical plates; A scale rod is connected with the side edge of one of the vertical plates at both ends; A horizontal scale is arranged on the scale rod; The adjustment module includes: An adjustment end pressurizing plate is sleeved on the four linear bearings; A first fixed plate is arranged on the outside of the vertical plate; A first screw nut; An adjustment screw rod is connected with the first screw nut through the first fixed plate; A pressure sensor is installed on the first fixed plate, and the detection end is arranged on the first screw nut; A first pointer is arranged on the first fixed plate; Two first limit blocks are symmetrically arranged on the middle part of the adjustment end pressurizing plate; A first bearing sliding block is located between the two first limit blocks and vertically slides through the first limit block; A first cross roller bearing is embedded in the middle part of the first bearing sliding block and connected with the first screw nut; The pressurizing module includes: A force end pressurizing plate is sleeved on the four linear bearings; A second fixed plate is arranged on the outside of the vertical plate; A second screw nut; A pressurizing screw rod is connected with the second screw nut through the second fixed plate; A second pointer is arranged on the second screw nut; Two second limit blocks are symmetrically arranged on the middle part of the force end pressurizing plate; A second bearing sliding block is located between the two second limit blocks and vertically slides through the second limit block; A second cross roller bearing is embedded in the middle part of the second bearing sliding block and connected with the second screw nut; Four limit rods are symmetrically arranged on the edge of the inside of the force end pressurizing plate; Two length sliding groove blocks are symmetrically arranged on the top of the force end pressurizing plate; Two length adjustment plates are respectively slidably connected with one of the length sliding groove blocks; Two length positioning blocks are respectively installed on one of the length adjustment plates; Two length scales are respectively arranged on the top of one of the length sliding groove blocks.

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